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The acceleration due to gravity is meters/sec/sec.
The initial velocity of object is zero.
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Acceleration of a object is rate of change in velocity .
Velocity is .
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Substitute in .
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Substitute .
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Substitute in .
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The position of a object at time is .
Velocity of a object is rate of change in position .
Position at time is .
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The initial height of object is feet.
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Substitute in .
Substitute .
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Substitute in .
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The object reaches the ground after sec.
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Substitute .
m.
The stone fall m.
The velocity of an object is .
Substitute .
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Negative velocity means the object is falling down.
The impact velocity is m/sec.
The stone fall m.
The impact velocity is m/sec.
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